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5. Fault finding
Faults in a CIM 3XX BACnet module can be detected by observing the status of the two communication LEDs.
See the table below.
CIM 3XX fitted in a Grundfos product
Fault (LED status)
Possible cause
Remedy
1.
Both LEDs (LED1 and LED2)
remain off when the power
supply is connected.
a)
The CIM 3XX is fitted
incorrectly in the Grundfos
product.
Check that the CIM 3XX is fitted /
connected correctly.
b)
The CIM 3XX is defective.
Replace the CIM 3XX.
2.
The LED for internal
communication (LED2)
is flashing red.
a)
No internal communication
between the CIM 3XX and the
Grundfos product.
Check that the CIM 3XX is fitted
correctly in the Grundfos product.
3.
The LED for internal
communication (LED2)
is permanently red.
a)
The CIM 3XX does not support
the Grundfos product
connected.
Contact the nearest Grundfos
company.
4.
The BACnet LED (LED1)
is permanently red.
a)
Fault in the CIM 3XX BACnet
configuration.
• Check that the BACnet MAC
address (switches SW6 and
SW7) has a valid value [0-127].
See section
.
• Check the Device Object
instance number (switch SW3).
See section
5.
The BACnet LED (LED1)
is flashing red.
a)
Fault in the BACnet
communication (fault in cyclic
redundancy check).
• Check the transmission speed
(switches SW4 and SW5).
See section
• Check the cable connection
between the CIM 3XX and
the BACnet network.
• Check the termination resistor
settings (switches SW1 and
SW2).
See section
.
Summary of Contents for CIM 3 Series
Page 1: ...CIM 300 BACnet module Installation and operating instructions GRUNDFOS INSTRUCTIONS...
Page 2: ...2...
Page 80: ...JP 80 8 1 2...
Page 84: ...84 1 RoHS W W W y K K K K K y K K K K K d K d y d...
Page 85: ...85...
